Vibration device



FIG. 1 is a perspective view of a vibration device showing our new design;

FIG. 2 is a left side view of the vibration device, with the right side view being a mirror image thereof;

FIG. 3 is a front view of the vibration device, with the rear view being a mirror image thereof;

FIG. 4 is a top view of the vibration device;

FIG. 5 is a bottom view of the vibration device;

FIG. 6 is a perspective view of a second embodiment of the vibration device showing our new design;

FIG. 7 is a left side view of the vibration device, with the right side view being a mirror image thereof;

FIG. 8 is a front view of the vibration device, with the rear view being a mirror image thereof;

FIG. 9 is a top view of the vibration device; and,

FIG. 10 is a bottom view of the vibration device.

The broken lines indicate elements which do not form part of the claim herein. 

The ornamental design for a vibration device, as shown and described. 